Title:
RETRACTABLE CASTER WHEEL MECHANISM, AND TRANSPORT VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/022855
Kind Code:
A1
Abstract:
A retractable caster wheel mechanism, and a transport vehicle. The retractable caster wheel mechanism comprises a base structure (100), and a push rod-connecting rod mechanism and a driving wheel mechanism (400) arranged on the base structure (100) and mutually connected; the push rod-connecting rod mechanism comprises a driving push rod mechanism (200) hingedly connected on the base structure (100), and a slide block-connecting rod mechanism (300) slidably connected on the base structure (100); the driving push rod mechanism (200) is hingedly connected to the slide block-connecting rod mechanism (300); the slide block-connecting rod mechanism (300) comprises a slide block structure (310) slidably arranged on the base structure (100), and an elastic connecting rod structure (320) hingedly connected at one end of the slide block structure (310); the elastic connecting rod structure (320) is hingedly connected on the driving wheel mechanism (400); the driving push rod mechanism (200) is hingedly connected at the other end of the slide block structure (310).
Inventors:
SUN SHUANG (CN)
Application Number:
PCT/CN2020/089080
Publication Date:
February 11, 2021
Filing Date:
May 08, 2020
Export Citation:
Assignee:
HANGZHOU EIOROBOT TECH CO LTD (CN)
International Classes:
B62B3/02; B60B33/04; B62B5/00
Domestic Patent References:
| WO2019074452A1 | 2019-04-18 |
Foreign References:
| CN210284298U | 2020-04-10 | |||
| CN208278100U | 2018-12-25 | |||
| CN108944265A | 2018-12-07 | |||
| CN209008626U | 2019-06-21 |
Attorney, Agent or Firm:
HANGZHOU HANGXIN PATENT AGENCY (ORDINARY PARTNERSHIP) (CN)
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